The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 09, 2009
Filed:
Dec. 23, 2005
Applicants:
Rajeev Nongpiur, Burnaby, CA;
Xueman LI, Barneley, CA;
Phillip A. Hetherington, Port Moody, CA;
Inventors:
Assignee:
QNX Software Systems (Wavemakers), Inc., Vancouver, CA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G10L 19/06 (2006.01);
U.S. Cl.
CPC ...
Abstract
A system extends the bandwidth of a narrowband speech signal into a wideband spectrum. The system includes a high-band generator that generates a high frequency spectrum based on a narrowband spectrum. A background noise generator generates a high frequency background noise spectrum based on a background noise within the narrowband spectrum. A summing circuit linked to the high-band generator and the background noise generator combines the high frequency spectrum and narrowband spectrum and the high frequency background noise spectrum.